Table 1.

Impact of ionic strength on droplet size and zeta potential of RE5NE nanoemulsion stored at room temperature (30 °C)

Concentration of NaCl solution	Particle size (nm) 0 day	Particle size (nm) 30th day	Zeta potential (mV) 0 day	Zeta potential (mV) 30th day
0.5 M NaCl	55.87 ± 1.13a	58.16 ± 1.14b	− 35.22 ± 0.08b	− 36.87 ± 0.05a
1.0 M NaCl	56.39 ± 1.35a	60.23 ± 1.29b	− 22.39 ± 0.02b	− 23.42 ± 0.06a
2.0 M NaCl	57.71 ± 1.06a	63.42 ± 1.83b	− 18.37 ± 0.07b	− 19.76 ± 0.03a

Data are presented as mean ± SEM (n = 3)

^a,bMeans within row with different lowercase superscript are significantly different (p < 0.05) from each other